Add empty newline at the end of test

Author: llrs

tests/reg-tests-1e.R

@@ -2579,6 +2579,5 @@ stopifnot(is.null(names(rep.int(x, 2))),
 rbind(last =  proc.time() - .pt,
       total = proc.time())
 
-
 ## package_version can be converted back to its own original representation
-stopifnot(as.character(package_version("1.2-1")) == "1.2-1")
+stopifnot(as.character(package_version("1.2-1")) == "1.2-1")